Cited by 776Face Recognition and PerceptionFace recognition and analysisEvolutionary Psychology and Human Behavior

Deep neural networks are more accurate than humans at detecting sexual orientation from facial images.

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Wang, Yilun, Kosinski, Michal·2018·Journal of Personality and Social Psychology

Published version of a preprint

Abstract

We show that faces contain much more information about sexual orientation than can be perceived or interpreted by the human brain. We used deep neural networks to extract features from 35,326 facial images. These features were entered into a logistic regression aimed at classifying sexual orientation. Given a single facial image, a classifier could correctly distinguish between gay and heterosexual men in 81% of cases, and in 71% of cases for women. Human judges achieved much lower accuracy: 61% for men and 54% for women. The accuracy of the algorithm increased to 91% and 83%, respectively, given five facial images per person. Facial features employed by the classifier included both fixed (e.g., nose shape) and transient facial features (e.g., grooming style). Consistent with the prenatal hormone theory of sexual orientation, gay men and women tended to have gender-atypical facial morphology, expression, and grooming styles. Prediction models aimed at gender alone allowed for detecting gay males with 57% accuracy and gay females with 58% accuracy. Those findings advance our understanding of the origins of sexual orientation and the limits of human perception. Additionally, given that companies and governments are increasingly using computer vision algorithms to detect people's intimate traits, our findings expose a threat to the privacy and safety of gay men and women. (PsycINFO Database Record

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Crossref · 10.1037/pspa0000098

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  • A recent paper used publicly available images of faces uploaded to a dating website to train AI software to detect someone's sexuality based on a small number of photos, raising questions around consent.

    “For example, a recent paper used publicly available images of faces uploaded to a dating website as a way to train AI software to detect someone’s sexuality based on a small number of photos (Wang and Kosinski 2018). While the study received ethics committee approval, it raises further questions around consent, since it is implausible that the users of the dating website could or necessarily would”

    From How to Design AI for Social Good: Seven Essential Factors (2020) · cites this paper as Wang and Kosinski 2018

  • Computer vision algorithms have been used to ascertain sexual orientation of people by scrutinizing thousands of facial images taken from public profiles on a dating website.

    “For example, a study found that computer vision algorithms were used to ascertain sexual orientation of people by scrutinizing thousands of facial images taken from public profiles on a dating website (Wang and Kosinski, 2017).”

    From SHIFTing artificial intelligence to be responsible in healthcare: a systematic review (2022) · cites this paper as Wang and Kosinski, 2017

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Authors
Wang, Y., & Kosinski, M.
Affiliations
Stanford University (US)
Venue
Journal of Personality and Social Psychology
Published
2018-02
Volume
114
Issue
2
Pages
246-257
ISSN
  • 0022-3514 (ISSN-L)
  • 1939-1315
OpenAlex
W2781265533
Cited by
766
References
66
Citations by year
2026: 29 · 2025: 57 · 2024: 57 · 2023: 146 · 2022: 98 · 2021: 92 · 2020: 155 · 2019: 75 · 2018: 51 · 2017: 4 · 2013: 1
FWCI
55.54
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal of Personality and Social Psychology (publishedVersion)
  • PubMed (publishedVersion)
  • PsyArXiv (OSF Preprints) (submittedVersion)
  • OSF Preprints (OSF Preprints) (submittedVersion)
  • PsyArXiv (OSF Preprints) (submittedVersion, cc-by)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Face recognition and analysis
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Evolutionary Psychology and Human Behavior
Keywords
face images, deep neural network, gay men, gay women, facial morphology, privacy, computer vision, logistic regression
MeSH terms
Facial Recognition, Deep Learning, Adult, Face, Female, Humans, Male, Social Perception, Sexuality

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